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Look Ma, No Wires! The Latest in Wireless HDTV Technology
from: George PhillipsIn June of 2005, two companies created a home entertainment system that will broadcast high definition video and audio streams wirelessly to an HDTV. This new technology should be available in the United States by 2006. The companies say this will provide the wireless experience that customers will demand. The main idea behind going wireless is that you can place your TV anywhere in the room within a certain radius. It doesn’t have to be hooked physically to a set top box, cable or satellite server, or DVR receiver. This is called Ultra Wideband Technology.
How does this work? A wireless technology sends an extremely low power signal over a broad radio spectrum. Conventional radio systems have a narrow bandwidth. The new Ultra-Wideband sends a wide range of frequency spectrum by relaying a series of low-power, and narrow pulses. This combination causes less interference than conventional narrowband radio stations and is designed to deliver the same performance of a wired set. The Ultra-Wideband Technology will be ideal for the consumers who demand increasingly multimedia-rich applications.
Just as cell phone transmission and reception have improved so will the wireless transmission of HD. Going wireless with your home phone was a wonderful invention and we all loved it. Who knew that it would lead to cell phone technology that would allow you to take and send pictures, link with the Internet and now are able to get into television signals. Just as this technology happened to the phone industry, it will also happen to the video and audio industry. Wireless is the next big development for HDTV. Wireless links for computers are already common. My wireless network connects my laptop to my PC sitting in another room. I can even take my laptop next door and still be connected to the Internet. Imagine what will happen when high definition signals can be picked up anywhere with wireless linking. The demand for these conveniences will increase, and as the technology gets better, and demand gets higher, these parts will come down in price.
What is the future of wireless transmission of HDTV and how will it affect us as consumers? Let’s just look at one example of how wireless has changed something we are all familiar with, newsgathering. It has revolutionized the news gathering industry. We can now see and monitor anywhere in the world and see news as it happens. Look at the role the “imbedded” reporter has in the war zone. We see events as they are happening, the signals don’t have to be stored and then edited and converted into an image that we can see on our television set. Broadcasting signals to a station has become faster and easier with digital. The Internet can send long-distance signal movement. The uses of these high-speed lines are becoming increasingly popular because as more are becoming available, the lower the pricing.
Another new wireless technology to send transmissions a shorter distance is called Compressed Orthogonal Frequency Division Multiplex. COFDM is capable of sending and receiving packets of data. COFDM is obstruction-friendly and is without multipart distortion, fading or other distortions that broadcasters are used to in regular analog transmission. News vehicles equipped with COFDM can send signals using a smaller directional or omni directional assembly as opposed to the directional antenna-topped mast. They have been successfully used while driving under canopies, through tunnels, in high traffic and around tall buildings with little or no distortion. To the average consumer, it means that our news is able to get to us faster than ever before.
COFDM transmission also needs less power but still relays a quality signal. With being wireless, it’s possible for transmission to occur while moving and such distortions such as reflections are removed. In simple terms, a news crew can transfer the news they have just collected from one spot while on the move to the next “hot” spot. Our news is being brought to us by satellite connections and videophone technology. It puts you where the action is and allows you to feel a part of the scene. You have seen this technology work just in the last few months. Look at the instant sights and sounds we saw immediately after Hurricane Katrina.
Important Notice Concerning DTV and HDTV: Although many TV systems have already complied with earlier rulings for changing all transmission to digital TV, there still is doubt as to when overall compliance will be reached. Earlier it was scheduled for late 2006, but it is doubtful if this happens.
George Phillips is the webmaster of Better Home Living Guide and the
Continuing Your Education Online website ... Anything related to better home living can be found in our directory of topics at www.cashbuilder.com
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